The speed of light = 300,000,000 meters per second
The mass of the earth = 6,000,000,000,000,000,000,000,000 kg
The mass of an electron = 0.000000000000000000000000000091 g
The wavelength of light = 0.000059 cm

A number written in scientific notation is in the form:
____________

where n = the _______________ and 1 < ______ < 10
and m = the __________________ and m is a positive or negative
integer

_______________________________ - depends on the amount
of substance present

_______________________________ - independent of the
amount of substance

4. Energy (the capacity to do work)

(kg x m 2 ) / s 2

units: J (joule), calorie

5. Density

symbol =

____________________ property

definition:

equation:

Examples:

1) A block of aluminum occupies a volume of 15.0 mL and has a mass
of 40.5 g. What is the density?

2) Mercury metal is poured into a graduated cylinder that holds
exactly 22.5 mL. The mercury used to fill the cylinder has a mass
of 306.0 g. From this information, calculate the density of
mercury.

3) Find the mass of 250.0 mL of benzene. The density of
benzene is 0.8765 g/mL.

4) What volume of silver metal has a mass of exactly 2500.0 g?
The density of silver is 10.5 g/cm3.

Challenge Density Problems:

1) Lithium is a soft, gray solid that has the lowest density of
any metal. It is an essential component of some advanced
batteries. If a small rectangular slab of lithium weighs 1.49 x 103
mg and has sides that measure 20.9 mm by 11.1 mm by 11.9 mm, what is the
density of lithium?

2) Galena, an ore of lead, has a volume of 4.6 cm3.
If the density of galena is 7.5 g/cm3, what is the mass (in
kg) of that piece of galena?

6. Measuring Temperature

Temperature

- a measure of
how hot or cold a substance is relative to another substance

- determines
whether there can be heat transfer from one object to another and
determines the direction of heat flow